Debris in engine

[deflator]

Here's a dumb question, but its not something I want to take a chance on. I'm replacing my headgasket, but while scraping the old one off I got a few chunks of it down the oil passages. Nothing too large, I was very careful and blocked the holes off with paper towel. But some still got in there. Is this as big of a danger as I think and what can I do to clean the block out?

 

[RoasT BeeF]

It probably wont be a big issue if none of the peices were to big, it happens. Just make sure you change the oil and filter soon after.